The rules most commonly used nowadays are intended to prevent inherent imbalances in classes becoming too dominant and leading to too many one sided matches. Obviously this doesnâ€™t always occur, and it is still possible to completely negate attacks under these rules, but in general if itâ€™s just a standard game donâ€™t stack and absorb someone to the point that their damage becomes insignificant. Save that sort of thing for tournaments. Theyâ€™re fairly comparable to whatâ€™s being regarded as GM in public games on Battle.net, with a couple of exceptions, the main ones being the bans on Decrepify, Bone Prison and recasting Cyclone and Bone Armour.

No potions (except mana potions), mercs, wells, or shrines.
No recasting Cyclone and Bone Armour.
No minions that cannot be summoned in town with the exception of Decoy.
No Holy Freeze, Decrepify, Slow Missiles, or Bone Prison.
No mass slow (>10%), no mass poison from items (>200), no mass replenish (>25).
No curse charges (this includes Slow Missiles). Chance to cast is acceptable.
No over absorb. Limit 2 items per element with the standard ban on Rising Sun and Black Oak.
Mana potions are allowed for all characters except ES based sorcs

If you aren't sure about whether something is allowed, ask the host. You can play very BM characters if they're up for it. :grin: